Pick a set of exercises.
The exercises are different for every condition of course, but they are all pretty simple.
For example, below is a set of exercises for those with chronic back pain and discomfort caused by osteochondrosis.
Lie on your back, spread your arms with your palms down. Keep your legs straight and feet together. Without lifting your head, shoulders or your left foot, slowly turn your left hip to the right. Stay like this for 2-3 seconds, then slowly return to the initial position. Repeat the same exercise with your right hip.